На заказ 5N селен Se гранулы 99.999% бескислородные селен гранулы для использования в Галактическом машине

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Product Overview

Description



Product Description


Purity: 3N,4N,5N,6N.


Size:2-4mm


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Description:


Molecular weight 78.96
Appearance gray-black lump
Melting point 217 °C
Boiling point 684.9 °C
Density 4.79 kg/m3
Solubility in water N/A
Resistivity 106 microhm-cm @ 0 °C
Electronegativity 2.4 Paulings
Heat of fusion 1.22 Cal/gm mole
Heat of vaporization
3.34 K-cal/gm atom at 684.9 °C
Poisson's ratio 0.33
Specific heat 0.767 Cal/g/K @ 25 °C
tensile strength
N/A
Thermal conductivity 0.00519 W/cm/K @ 298.2 K
Thermal expansion (25 °C) (amorphous) 37 µm·m-1·K-1
Vickers hardness N/A
Young's hardness 10 GPa


 


Application:









1. Optical reproduction of dry seal
2. Used as color and plastic in paint, enamel, glass and ink.
3. It is also used to make photocells, rectifiers, optical instruments, photometers, etc.
4. Selenium can be used as photoelectric cells and solar cells in the electronics industry. Selenium is also used in televisions and radio faxes.
5. Selenium can color or decolor the glass. The high-quality signal lens glass contains 2% selenium. The selenium-containing flat glass is used as a solar heat transfer plate and a laser window infrared filter.
6. Alloys composed of selenium and other elements are used to make low-voltage rectifiers, photovoltaic cells, and thermoelectric materials.
7. Selenium is used as an oxidant and catalyst in organic synthesis in compound form, and can be used in the petroleum industry.
8. The addition of selenium to rubber can enhance its abrasion resistance. Selenium and selenium compounds are added to grease.


Selenium can be formed into discs, particles, ingots, pellets, flakes, powders, rods, sputtering targets and many other forms and custom shapes. Selenium can be used in the lens of carbon dioxide (CO2) laser, photovoltaic solar industry and thermoelectric equipment.



Specification:


 


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Packaging & Shipping


Packaging: Three layers of vacuum packaging or argon gas protection, in line with IATA and DOT packaging specifications


Transportation: Comply with international dangerous goods transportation regulations and regulations.


 


Standard export packaging:  Vacuum sealed package inside; export carton or wooden case outside Shipment can be made by Fedex, DHL, UPS, TNT express etc.  for gross weight ≤100KG; For large shipment ≥100KG ,  shipping method will be discussed with you.


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Our Services


  Customized products and packages can be provided according to customers' special requirements


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Company Information


 


Founded in 2014, Changsha XinKang Advanced Materials Co., Ltd is a professional factory specialized in the research, development, production, processing, sales and service of metal powder.alloy powder and other compound powder. We process our products according to the standards of GB/T, ASTM/B ASME SB, AMS, DIN, JIS and other requirements from customers. And these products have been widely used in the petrochemical industry, aerospace and aviation, shipbuilding, energy, medical, military, electronics, environmental protection, machinery and instruments, metallurgy, automotive and other fields. Our factory is located in Changsha, Hunan, which covers an area of 4000 square meters. It has been certificated with ISO9001:2015 quality management system and ISO14001:2015 environmental management system. At present, the company is well equipped with Hi-tech equipment and a huge contingent of technicians. To ensure the excellent quality, we test the products with carbon sulfur instrument, spectrometer, flaw detector, cupping machine, stiffness tester and so on. Professional technician, skilled workers and advanced equipment enable us to present products and services with high quality. Our products have been exported to USA, Europe, Middle East, Japan, Korea, Singapore, India and Kenya, it's good quality, competitive price, timely delivery and best after-sales service are highly appreciated by our customers.3_04


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FAQ


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